Sericite is the name given to very fine, ragged grains and aggregates of white (colourless) micas, typically made of muscovite, illite, or paragonite....

rocks. Phyllic alteration is characterised by the assemblage of quartz + sericite + pyrite, and occurs at high temperatures and moderately acidic (low pH)...

achieves a preferred orientation. It is primarily composed of quartz, sericite mica, and chlorite. Phyllite has fine-grained mica flakes, whereas slate...

Keizan O c '96 Choshi Tokubetsu 1993 She's Grace m 1995 Fuyo Stakes 1993 Sericite Dandy c 1997 Tuf Hai 1993 Hornet Pierce m 1998 Sumidagawa Tokubetsu 1994...

and chlorite-biotite phyllite intercalated with minor amounts of biotite-sericite-quartz schist. Between 7,000 and 7,600 m (23,000 and 24,900 ft), the lower...

country rock. Plagioclase feldspar within the rock is converted to sericite (sericite is not a mineral; it is a term that is used to describe any fine-grained...

copper-producing state. The ore was chalcopyrite with pyrite and pyrrhotite in sericite schist host rock. The Elizabeth deposit was discovered in 1793 and started...

for Al in the Y site and a corresponding increase in Si in the Z site. Sericite is the name given to very fine, ragged grains and aggregates of white (colorless)...

clay minerals. Chlorite is found in pelites along with quartz, albite, sericite, and garnet, and is also found in associate with actinolite and epidote...

in weathering and hydrothermal environments; it may be a component of sericite. It is common in sediments, soils, and argillaceous sedimentary rocks as...

gridiron twinning. Distinguishable from sanidine by a larger 2Vx. Other characteristics Low negative relief; alters to sericite or clay (commonly) References...

chlorite ± sericite ± silica. Often the host rock is entirely replaced by chlorite, which may appear as a chlorite schist in deformed examples. Sericite zone...

squared for lintels. The greenschist, whose colour comes from chlorite and sericite, are used mainly for roofing in Nord-Cotentin, but also masonry in Cherbourg...

continuous and do not "pinch and swell." Alters to Commonly alters to sericite or clay. Relief Low negative relief Optical sign Biaxial negative Color...

quartzite-phyllites, and sericite schist, which show a continuous transition from basaltic lavas tuff to the chlorite and sericites schist. In Bagrote valley...

rocks, which are about 2 km (6,600 ft) thick, consist of Upper Proterozoic sericite and chlorite slate and schist that contain minor amounts of metavolcanic...

about 1,000 to 2,000 feet thick on Greylock and "consists of muscovite (sericite), chlorite, and quartz schist." It lies above a formation called "Bellows...

selvages. Quartz-sericite-pyrite alteration, in which these minerals can be deposited both in veins and in a disseminated manner; sericite in particular...

is a microscopic mixture of several other minerals, zoisite, epidote, sericite, albite or other sodium-rich feldspar along with possibly scapolite. The...

Rain, snow, wind, frost and heat gradually eroded the mountains. Solid sericite-quartzite schists, from which the remains are composed, were eroded less...

typically have an outer epidote – chlorite mineral alteration zone. A quartz – sericite alteration zone typically occurs closer to the center and may overprint...

results in the formation of abundant secondary minerals such as kaolinite, sericite, serpentine, montmorillonite, and chlorite and a corresponding increase...

Alteration is nonexistent to very weak at best, and the weak chlorite and sericite are believed to be mainly post-ore effects. Other post-depositional alteration...

Hydrothermal alteration has given rise to clay, oxidation products and sericite. Obsidian was quarried on the mountain. López et al. 2012, p. 600. López...

developed with metasomatic replacement of primary minerals by carbonate, sericite, albite and quartz. Currently 25 deposits have been identified and explored...

(dolomite, sandstone, andesite) which is intensively hematite, chlorite and sericite altered. Major sulfide minerals are pyrite, chalcopyrite, bornite and chalcocite...

The underlying Génis sericite schist is very rich in the minerals quartz, chlorite and muscovite (variety sericite). The sericite schist is probably of...

westernmost portion of the park, sandwiching the Precambrian Love Cove Group sericite and chlorite schists. A Pleistocene ice cap flowed radially across the...

– Spotted white, pinkish brown – ≤ 30% clay minerals (i.e. kaolinite, sericite etc.) – Unaltered rock forming minerals (i.e. feldspar, biotite, quartz...

the war effort. Beginning in 1951, the deposit was mined for associated sericite, which was used as a white filler. Gold is associated with silicic, kaolinitic...